Spread types may only be created from object types

[alexbjorlig]

I am not sure if this is a bug, but after upgrading to angularfire2@5.0.0-rc.9 I get this strange error on our spread operators. I created a small stackblitz that illustrates how we use the snapshotChanges() in our project. If you install angularfire2@5.0.0-rc.8 there are no errors.

Version info

Angular: 6

Firebase: 5.0.2

AngularFire: 5.0.0-rc.9

How to reproduce these conditions

https://stackblitz.com/edit/spread-operator-error

Open stackblitz

Debug output

Expected behavior

No error

Actual behavior

Typescript gives error

ERROR in <path-to-file>: error TS2698: Spread types may only be created from object types.

[jamesdaniels]

This was a breaking change in RC 9, we fixed the typings :P

Your data object is now a Shirt. Odd that it's not spreading for you, you might want to look at your Shirt interface... I'll play around with this in my test project.

In the meantime you could do ...(data as {})

[alexbjorlig]

Thanks for the quick response.

Am also playing around, and the suggeste fix work.

I think it boils down to my (limited) understanding of functions that handle types dynamically. Like the queryCollection function should probably have a return signature, of a different type than, say, Observable<any[]> 😃

But thanks anyway!

[jamesdaniels]

Ah, so yeah you're losing the type information when you pass the reference + the default is any

I forked your StackBlitz and altered it to achieve what I think you're looking for https://stackblitz.com/edit/spread-operator-error-j5r6nm?file=src/app/app.component.ts